It's super hot here right now, day 4 at plus 43C degree temps. Sitting in a rush hour traffic jam seemed like car was about to stall, like fuel starvation to the SU. When I got home (just!) there was a high pitched whine coming from the vicinity of the fuel tank, the whine gradually subsided after I turned the engine off. Any ideas what this is all about, blocked tank breather maybe?

_________________
Slide
1965 Mini Van (1360)
1970 Mk2 Cooper S (1310)
1978 Rover SD1 V8 (4.6)
1996 Land Rover Discovery V8 (4.0)